2125542451 has 4 divisors (see below), whose sum is σ = 2128403952. Its totient is φ = 2122680952.

The previous prime is 2125542449. The next prime is 2125542511. The reversal of 2125542451 is 1542455212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2125542451 - 2¹ = 2125542449 is a prime.

It is a super-2 number, since 2×2125542451² = 9035861422006174802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125542151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1429636 + ... + 1431121.

It is an arithmetic number, because the mean of its divisors is an integer number (532100988).

Almost surely, 2^2125542451 is an apocalyptic number.

2125542451 is a deficient number, since it is larger than the sum of its proper divisors (2861501).

2125542451 is an equidigital number, since it uses as much as digits as its factorization.

2125542451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861500.

The product of its digits is 16000, while the sum is 31.

The square root of 2125542451 is about 46103.6056182160. The cubic root of 2125542451 is about 1285.7501816510.

Adding to 2125542451 its reverse (1542455212), we get a palindrome (3667997663).

The spelling of 2125542451 in words is "two billion, one hundred twenty-five million, five hundred forty-two thousand, four hundred fifty-one".